4-144659771-C-T

Position:

chr4-144659771-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_022475.3(HHIP):c.764C>T(p.Thr255Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,612,696 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T255N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

HHIP
NM_022475.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.77

Variant links:

Genes affected

HHIP (HGNC:14866): (hedgehog interacting protein) This gene encodes a member of the hedgehog-interacting protein (HHIP) family. The hedgehog (HH) proteins are evolutionarily conserved protein, which are important morphogens for a wide range of developmental processes, including anteroposterior patterns of limbs and regulation of left-right asymmetry in embryonic development. Multiple cell-surface receptors are responsible for transducing and/or regulating HH signals. The HHIP encoded by this gene is a highly conserved, vertebrate-specific inhibitor of HH signaling. It interacts with all three HH family members, SHH, IHH and DHH. Two single nucleotide polymorphisms (SNPs) near this gene are significantly associated with risk of chronic obstructive pulmonary disease (COPD). A single nucleotide polymorphism in this gene is also strongly associated with human height.[provided by RefSeq, Feb 2011]

HHIP links:

HHIP-AS1 (HGNC:44182): (HHIP antisense RNA 1)

HHIP-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27999774).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HHIP	NM_022475.3 linkuse as main transcript	c.764C>T	p.Thr255Ile	missense_variant	4/13	ENST00000296575.8
HHIP	XM_005263178.6 linkuse as main transcript	c.764C>T	p.Thr255Ile	missense_variant	4/14
HHIP	XM_006714288.5 linkuse as main transcript	c.764C>T	p.Thr255Ile	missense_variant	4/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HHIP	ENST00000296575.8 linkuse as main transcript	c.764C>T	p.Thr255Ile	missense_variant	4/13	1	NM_022475.3	P1	Q96QV1-1
HHIP-AS1	ENST00000512359.1 linkuse as main transcript	n.84-32G>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000798

AC:

AN:

250624

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135428

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1460528

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726480

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 27, 2022

The c.764C>T (p.T255I) alteration is located in exon 4 (coding exon 4) of the HHIP gene. This alteration results from a C to T substitution at nucleotide position 764, causing the threonine (T) at amino acid position 255 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.036

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

T;.

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.80

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.28

T;T

MetaSVM

Benign

-0.74

MutationAssessor

Uncertain

2.7

M;M

MutationTaster

Benign

0.99

D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

0.67

N;N

REVEL

Benign

0.14

Sift

Benign

0.052

T;D

Sift4G

Benign

0.12

T;D

Polyphen

0.97

D;P

Vest4

0.61

MutPred

0.46

Gain of glycosylation at T255 (P = 0.019);Gain of glycosylation at T255 (P = 0.019);

MVP

0.33

MPC

0.52

ClinPred

0.71

GERP RS

4.9

Varity_R

0.75

gMVP

0.57

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over